Connection-register for telephone-exchanges.



y PATENTEDJ'ULY 25', 1905. E. E. A. ANDRE. y CONNECTION REGISTER EUR TELEPHONE EXGEANGES APPLIOTION FILED 'JULY 9.1903.

4 SHEETS-SHEET 1.

@www E@ 2U :E E SQ E@ RMEMRWRWRWEWEWE ,@ERR

A ad@ s v .oooo O @B D O.

CONNECTION REGISTER FOR TELEPHONE EXCHANGES.

APPLICATIONTILED JULY 9,1903.

4 SHEETS-SHEET 2.

I ffm/622767:"

. NO- 795,571- PATENTBD JLY 25, 1905.

, H. E. A. ANDR.

CONNECTION REGISTER FOR TELEPHONE EXGHANGES.

v APPLIOATION FILED JULY 9.1903.

4 SHEETSfBEEET 3.

5. 0 9 1.. Rw 2 L U .J D E .T. N E T A D.. R D N A A. UM E l CONNECTION REGISTER` FOR TELEPHONE EXCHANGES.

APPLIoATI'oN FILED JULY 9.1903.

4 SHEETS-SHEET 4.

UNITED STATES PAENT ormoni.

HENRI EMILE ALPHONSE ANDR, EOF. PARIS. FRANCE, ASSIGNOR TO WESTERN ICLICCIRI() COMPANY, OF CHICAGO, ILLINOIS, CORPORA- .IION OF ILLINOIS.

CONNECTION-REGISTER FOR TELEPHONE'EXCHANGES.

Specication of Letters Patent.

Patented July 25, 1905.'

.pplicmop'fned July 9.1903. serial No. 154.763.

To all whom ,it muy concern.;

Be it known thatl, HENRI EMILE ALPHONSE ANDR, a citizen of France, residing at Paris, France, have invented a certain new and usefullmprovement in Connection-Recorders for for each line either at the substation'or at the central oIIice with appropriate means for actuating this counter each time a call is made for whicha charge is to be rendered. In some cases the charge is made for each call transmitted to the central office; but more frequently the charge is not made unless the calling subscriber is actually placed in communication with the correspondent called for. The service-meter has been arranged to be actuated either manually by the operator or automatically-as' an incident to some act done in the course of putting the calling and called subscribers in communication. In accordance with my lnventlon the individual service-meter for each line may be dispensed with and a single connection-recorder provided for a group -of several lines-say those which are answered at a given operators position of the switchboardfsaid recorder having appa- `ratus selectively controlled by the several lines of the group, so that whenfactuated it will make a distinguishing record showing the particular line against'which the connection` is'to be charged. In the preferred form of my invention av connection-recorder at each -operators position comprises tape-printing mechanism actuated by groups of. magnets, one group being adapted to print on the tape the numerals of the units, another group the numerals ofthe tens, another the numerals of the hundreds, &c. A circuit is associatedf with each line to determine the actuation of a given magnet or set of magnets of the commn recorder, whereby said recorder is caused te print on the tape a number corresponding with that of the line in question. A switch for this circuit may be actuated either manually or automatically.

I will describe my invention more particularly by reference to the accompanying drawings, in which- Figure 1 is a diagram showing the manner in which nineteen elcctromagnets may be con nected to control the recording of the hund red numbers,` O to 99. Fig. .2 is a similar diagram showing the connections of the magnets necessary to control the recordingof thc thousand numbers, "0 to M999. Fig. 8 is a diagram hereinafter to be referred to in explaining the actio'n of the recorder. Fig. I is a diagram illustrating the principles upon which the mechanism of the recorder may be arranged to operate. Fig. 5 is a diagram illustrating avmodified form of mechanism for the recorder. Fig. 6 is a diagram showing the manner in which the recorder-circuit may he associated with a telephone-line at the central office. Fig. 7 shows the association of the recorder-circuit with a line of a central battery system. Fig. 8 shows the recorder-circuit associated with a line in another way.

Figs. 9 and 10 are diagrams showing further modifications hereinafter to be explained; and Fig. 11 shows a complete telephone-exchange system equipped in accordance with my 'invention. y

v The same characters of reference are used to designate the same parts wherever they are shown.

Referring first to Fig. l, which illustrates the connections for nineteen electromagnets which may control the recording mechanism "of a recorder in such a way as to permit the selective recording of any number from 0 to 99, the electromagnets are represented by circles, within each of which 1s marked the f figure of units or tens to which that-magnet corresponds. Theten bars c to a" represent the terminals -for the incoming wires of the recorder-circuits of the lines numbered from 0 to 99.7 The exponents of the letters t indicate the 'gures of the units of .the numbers of the lines whose recorder-circuits enter at the bar to which the letter is applied. Thus the bar a5 forms. the incoming terminal for the recorder-circuits of all the lines whose numbers have the figure 5 1n theunits place-thatia numbers "tif-15, 25,

&c., up to 95. 'lheterminals )of the several electroriiagnets are connected with the other or outgoing' wires of the recorder-circuits ol' lilies whose numbers are indicated immediately below each letter Thus the terminal ol' the electromagnet 60 is connected with the outgoing wires of lines 60 to 69, inclusive. The outgoing' wires of lines numbered between O and 9 are connected withv the terminal which is common to the ten unit-magnets 0 to 9.

By means of the nineteen electromagnetsshown in Fig. 1 it is possible to control all numbers from 0 to 99, inclusive. The current is caused to enter by that one of the bars a whose exponent indicates the ligure in the units-column 0l' the number in question, said current leaving by the terminal corresponding' to the ligure in the tens-column of the number in question, all the other terminals being disconnected.

Fig'. 2 shows the extension ol' the principle illustrated in Fig. 1 to permit the control of the thousaml numbers from 0 to 999, inelusive. ment of a number ol' additional magnets correspomlingl to the ligures indicating the hundreds. ln Fig'. 2 the horizontal row of circles at the bottom indicates the ten electromagnets O to 9 which arc reserved, as in Fig. l, lorthe'units ol' theI numbers to be controlled. 'lhus the bar a" of Fig. 2 represents the terminals l'o'l' the incoming' wires of all lines whose numbers end in 0 -240, "320," &c. ln like manner the vertical row of ten magnets 0() to 90 above the magnet 0 is reserved l'or the tens. A'lhus the electromagnet 00 is reserved l'or all the numbers in which the ligure in the tens-column is 0, such as "l00,"` "l0l, 307, &c., up' to "909." Similarly, the vertical row ol' ten electromagnets 100 to 19() shown in line above the circle l is reserved for numbers` in which` the ligure in the hundreds-column is "1." Similarly, the vertical row of ten magnets 200 to 2.)0shown in line abovethe circle 2 is reserved l'or the numbers having the ligure "2" in the hundreds place, and so in like manner up 'lhis extension involves the employ.

to thel vertical row 90|) to 990, which includes thel ten magnets reserved l'or numbers ol' which the ligure in the hundreds place is "9." 'l`he total number ol' magnets shown in Fig. 2 is one hundred and ten. 'lhe several terminals are connected with the outgoing wires ol' the circuits having' the numbers (in units, tens, or hundreds, as the case may be) indi-v cated immediately below the letters. 'lhus 'the terminal ol' the electromagnet `50 is connected with the outgoing wires ol' the ten circuits numbered 450 to 452), inclusive lt may be remarked that the number ol' electromagnets involved in the control of one thousand numbers in the manner illustrated in Fig. 2 may beI reduced to nineteen byproviding ten independent windings for each of the nine electromagnets correspondingr to the hundreds n100 to 900, inclusive. ln such case the ten independent windings of each magnet would be indicated by the ten circles in the. vertical row. lhus the electromagnet 10() would have ten windings, which would be indicated diagrammatically by the ten circles in the vertical row above the circle 4. The magnet should be adapted in this case to be excited when any one of its windings is ener gized. 1f in any case the ten windings l'or a single magnet is considered undesirable. two or more magnets may be provided, with the wind-ings distributed between them, it being suliicient if-the connections are as indicated in the diagram. An apparatus having only nineteen electromagnets arranged as above explained is capable of controlling the thousand numbers from O to 999, inclusive. It is simply necessary to cause the current to enter at that one of the terminals c whose exponent indicates the figure in the units place of the number and to have the current leave by that one of the several terminals which corresponds to the figures in the lmndreds and tensplaces, the other terminals of the apparatus being disconnected. 'lhe connections between the electromagnets of Fig. 2 are such that when the current passes between any two terminals selected as above mentioned the only electromagnets traversed by this current are those which represent the ligures of units, tens, and hundreds of the number in question. .lhus to control No. 47 the current should enter at 117 and leave at lo controlthe number 738, the currentshould enter at nl and leave by W30-7, and so on. 'lo record any number, therefore, it is only necessary to connect thc incoming and outgoing wires ol' the circuit to the two terminals l and respectively determined as above described. (liven this method oll selecting the magnets to control any number as above set forth, it ils evident that a record can be made o|` this number by having the armatures of the several electromagnets selected actuatc directly or indirectly a recordingapparatus oll any desired model. 'lhese electromagnets may, for instance, actuate the type-bars ol a writingnnuehine in such away as to produce the same ell'ect as the linger ol' an operator in working an ordimu'y type-writer. 'lhe number olI4 recording-levers or type-bars which would be actuated in rwording any number would he only as many as there are digits in the number. 'lluis l'or the number "78(3 the recording-levers actuated would be those coi'- responding to the ligure."6of units, 8

ol' tens, and 7 of the hundreds.-

'lhe paper tape of the recording apparatus may, if desired, be arranged to travel continuously at a constant rate and may be provided with suitable guide-marks indicating time, softhat. thetime of making any record `can be estimated from these type-bars, the

, lever l1, which is thereupon rocked the relative place on the tape where the number appears, or the recording apparatus may bear-ranged so as to print the exact time when the number is printed, in which case the paper would he advanced onlystep-by-step as the records were made, as in ordinary writing-machines. The levers of the recording apparatus are arranged in three distinct groups d Z2 il, (see Fig. 8,) of which the group Z would represent units, (Z2 tens, and d3 hundreds.' Recording-levers or type-bars ot any grou p should be arranged to mark the paper at the place. reserved thereon for units, tens, or hundreds, according to thegroup-in question. Thus the actuation of any one of the ten type-bars'O toi)V of the group al' marks upon the paper tape the iigure occupying thel place of units. Similarly, the actuation of one of the ten type-bars O0 to 90 of the group Z2 marks a corresponding' figure Ain the tens' place, and so theactuation of any one ,of the nine type-hars of thehundreds, 100 to 9000i' the group d, marks a corresponding ligure in the hundreds place. The simultaneous actuation ot' one type-bar ot' each group 'produces the registration of `a number-ot' three figures corresponding to the particulartype-bars of thc three groups which are selected for actuation. 1 n

The mechanism of a recording apparatus adapted ior control in accordance with my inn venton is illustrated diagrammatically in Fig. r4f. A single drum c, kb v any suitable means, carriesa which may be rotated 'paper tape n, upon which the figures are Ato he marked by the type-hars j.

such as to reduce to the minimum the mechanical eifort required to be produced by these electromagnets. ical means for realizing' this end are well known, and Fig'. 4 is intended merely to suggest these means in adiagrammatic Way. The fb type-har 7' is shown in Ll` as arranged to be actuated -by a lever pivoted at /r' and held against the tension ol' a spring fr', by a detent g2, carried by tlie armature-lever r/ of an` electromagnet g. When the magnet g is energized, the exertion of a very slight attractive force upon its armature will serve to trip the on its pivot by the spring 27 to actuate the type-bar The mechanism may be `arranged tobe automatically restored to its normal position by a magnet l, included in a local circuit controlled at contact it', which is closed through theageney of the type-bar when said type-bar has `struck the paper to make its mark. The--type-bar j in the same movement which makes `its mark yactuates thelever In, which closes the contact The magneti being thus' excited attracts its armature, .which is carried y'by lever la, so restoring said lever .to which itis held yby the detent g2. As the type- If the electromagnets of' Figs. 1 and 2 are arranged to act directly* upon arrangement should K be The electrical'and mechanits normal position, in.

l bar is retracted the contact ls is opened. The e mechanism'for advancing vthe cylinder a and the paper In stepuby-step-as each record is made is too Well-known to require descripmay be arranged to be controlled by electromagnets'connected as herein set forth,

Fig. showsa modified form of recorder worked by clockwork mechanism. Three drums e may be provided similar to the drum e shown in Fig. 5, each drum including a controlling-wheel p ot' ten teeth (0 to 9, inu elusive) and a type-wheel g, mounted to rotate therewith, having ten characters corresponding to and dianietrically opposite the teeth oi' wheel 0. -The nine teeth of wheel u 'are i n d ierent verticalplanes, each tooth heing in position to he stopped by an electromagnctically-controlled detent r arranged in the same vertical plane. Thus the lever fr actuated bythe unitsma'gnet is arranged to stop the-tooth p marked 0, as shown in l:"s'id Fig. 5. Each of the detent-levers may l' he arranged to be actuated by an electromagl het g, vwhich may either be one oi' the mag-` l nets illustrated in Figs. lI and 2 or va sub- J sidiai'a" magnet controlled thereby. The actuation of the electromagnet g results in interl posing the detent in the path of thc corresponding'tooth p. At the same time the mech anism of the drum e may be released to Apermitthe'sanie to turn until it is stopped by the detect r which hasheen actuated. The typewheel gis thus rotated until the 'character corresponding' to 'the'tooth so stopped is which may be arranged tube struck at a point immediately, behindthe type character. The

three drums e should released at the same4 Having described the recording apparatus andl the means for controlling'the same, I will proceed t'o'findicate how it may be practically utilized in connection with the circuits of a telephonegexchange to count the nu-mberzot' connectionsestablished in the exchange..

' Fig. l6 showsa line l 2, connected with the spring-jack Aat thecentral oiiice... A keyB is associated. witb'each springjack and is adapted when actuated to connect the poles 0f a battery() the dimensions ot' the Y rought into position to mark the'paper In,

mechanism of the i in circuit with conductors 3 4;

leading to the controlling apparatus of the recorder in the manner described in connection with Figs. 1 and 2-that is to say, the conductors 3 4 will be the incoming and outgoing wires referred to in the description and will be connected to a given 'pair of terminals in such a way as to control a gvennumber corresponding to the vnumber of the line. With' this arrangement .theoperator can register a connection. for any line by simply depressin'g'the key B which corresponds to that line; Asignal D is shown included in the circuit 3 4 to indicate the completion of the circuit and the proper actuation of the recorder when the key is depressed. Fig. 7 shows a similar arrangement adapted for use with a central-battery system. The parts suchas the cut-of relay E and the line-relay F are well known. ln this case when the key B is depressed the circuit 3 4 is completed through the windingsof the line-relay, so as to cause adisplay ot' the line-signal I) ifl the recorder-circuit is complete, as it should In Fig. 8 I have shown a line 1 2 connected to a spring-jack A,the thimble whereof is connected to earth through the windings of a relay G, controlling the register-circuit 3-4. 'Ihe third contact of the operators plug H, which registers with the thimble of the jack when the plug is inserted to make connection with theline, forms the terminal ot' a circuit 5 6 from battery C. including a resistance H2. A key H is adapted when depressed by the operator to complete a short'circuit of the resistance H2, whereby increased current is pervmitted to fiow in the circuit 5 6 T8 t0 excite -through the eut-off relay in a manner well known in the art. lThis cut-0E relay E is arranged to act in twosteps, according to the strength of the current applied,'the first step serving simply tobreak the normal contacts, and the second step, taken when a-stronger current is applied, serving to complete the circuit from Abattery C to conductors 3 4 at the front-contacts ofsaid cut-o relay. Aresistance H is `included in the conductor 5 6 of the operators plug-circuit, said resistance being adapted to cut down the current so that the v,relay E will onlyf-pull u'p its armatures through the first step, While said resistance vfor eachl operators position. "number of calls chargeable to any-one line, :all that is necessaryis to count the number of ,timesthat the number of the line in question remains in the circuit. 'lhe operator is provided with a key H', by which the resistance may be shunted to cause increased current to How through the relay E, whereby the lsame is caused to close the recorder-cirralt 3 4. ln the arrangement of Fig. S), as well as in that of Fig.` 7, the circuit 3 4 is arranged to lie conipleted through the line-relay, se that the line signal-lamp D will indicate the actuation of the recorder.

Fig. l0 shows how the key ll ol Figs. 8 and 9 may be replaced by a relay K, interposed in vthe circuit from the ringing-generator ccntrolled at the ringing-key L of an operator-s plug-circuit and further controlled by the subscribers telephone-switch in the usual way. Such a ringing-circuit associated with the connccting-plugH and containing a relay responsive to the telephone-switch at the substation of the called line is well known in the art. In the arrangement shown the relay li. attracts its armature K when the called subscriber takes his telephone-receiver from its hook. The number of the calling subscriber is thus automatically recorded by the recorder upon the response of the called party.

closes at its front contact the short circuitv about the resistance H2.

Whenever the record-circuit is closed in either of the ways heretofore described, the record is actuated to record `the number of the calling subscriber upon the band of paper n, which thus shows a succession of numbers constituting a record'of the lines overwhich calls have been transmitted. A single record and controlling mechanism will be suiiicient To count the spring-jack A at the central ofice, and a plugcircuit is provided for 'connecting said lines together through the medium of said springjacks, the central-oliice apparatus of each linebeing that illustrated in Fig-9. The conduc- :ductors 3 4 including the central battery and exchanges, the combination with groups of `digits in its number, and means for supplying tors 3 4 leading from the front contacts of the any line is charged by recording the number cut-,oli1 relay of line 38 are connected with the of the line.

terminals of controlling-magnets 8 30, respec 3. The combination with a group of teletively, of the recorder.` In a similar manner phone-lines terminating at a central switchthe conductors 3 LLleading from the front board, of switching devices for making concontacts of the cut-off relay of line 5A are con-` notations, a connection-recorder common to neeted with the terminals of magnet 5 of the the group, having electromagncts adapted to recorder. Each cut-off relay is so arranged operate in different combinations to make that when its circuit is closed by the insertion correspond ing distincti vc records, a recorder: of a plug in the spring-jack of its line it will switch, a source of current, and a recorderdisconnect the line-'signaling apparat-us from circuit foreach line brought under the control the line, but owing` to a resistance in such cirof said switch in making connection with the cuit will not receive sufiicient current to l line, each recorder-circuit including a distincbrmg ltsarmatu res into engagement withthc tive combination of magnets, whereby a dehcontacts forming the terminals of conductors nite record distinguishing the connected line 3 4. The plug-clrcult shown is similar to y vmay be effected by the actuation of said that already described in connection with Fig. switch during a connection. l() and is provided with a relay K responsive 4. The combination with a plurality of teleto the. telephone-switch of the called subphoneelines, of a recording device associated scriber and adapted when energized to 'close with and common to said lines, said 'device a shunt around the resistance in the circuit being adapted i' or selective actuation, electroof the cut-off relay belonging' to the callingmagnetically-actuated mechanism for operatline, and so to complete the circuit of coning the recording device, and means associated with each line for applying current to said electromagnetic me'chanism, where-by the recording device may 'be selectively actuated to eiect a distinctive record for each oi' the lines with which it is associated. 5. 'lhecombination with a plurality of telephone-lines, of a circuit associated with each line and a switch for controlling the same, a group of electromagnets, each circuit including one or mo e of said magnets to form dis# tinctive comlfinations, type-bars 'controlled by said magnets, and a tape upon which each type-bar when actuated by its controlling- Inagnet is adapted to imprint a characteristic indication, whereby the calls of a number of the controlling-magnets 30 and 8 to record the call.

"Iclaim 4 1. In a recording apparatus for telephoneelectromagnets, each magnet corresponding to a particular gure, of a recording device controlled by each magnet to record the cofrresponding ligure, a plurality of circuits, one for each telephone-line in the exchange, each including certain particular magnets which represent the figures of a distinctive number corresponding to the number of such line, the magnets in each circuit being selected from the severalgroups according to the respective recording d evice.

' 6. The combination with a plurality of telephone-lines, of an electromagnetic recording device permanently associated with and common to said lines, said d evice being adapted to beA selectively actuated to make a distinctive record for each of the"1ines, and means associated with each line for bringing about the actuation of the recording device to efect the record peculiar to that line.

. lIn witness whereofI hereunto subscribe my name this 10th day of June, A'. D. 1903.

V HENRIy EMILE LIHONSE ANDR.

current in any circuit to actuate the magnets thereof, whereby the corresponding number is recorded. A

2. The combination witha group of telephone-lines', of a connection-recorder common to the group, comprising anumber of electromagnets adapted for` actuation singly or in sets or combinations, recording mechanism arranged to be actuated by said electromagnets, the vrecord made being dependent upon the particular magnet or set of magnets selected, a circuit associated with each line adaptedl to determine the operation of a corresponding distinctive magnetor combination of magnets, and a switch for controlling Vsaid circuit to actuate said magnets, whereby each call from Nitnessesr J. ALLIsoN BOWEN,

l H. PLANCHER.

lines are selectively recorded upon a single 

